Gary W. Smith wrote:
It's getting there, albeit slowly. I think that if you rule out any up and coming application but it's just not there yet we wouldn't have anopensource community...We have a variety of reasons for using MySQL, most of them aren't good ones though but it's something we've been able to work with for some time.
I'd say start with MySQL because it's so common but it should be able to talk to any popular DB.